Two spinners are spun 20 times. a sum of 7 is landed on 5 times. what is the experimental probability of not spinning a sum of 7?

Hello i need some with trigonometric substitutions. [tex]\int\limits^a_b {x} \, dx[/tex]

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula, equation, to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

Will give brainliest what is the value of x? enter your answer in the box.